[scheduler] Teach scheduler about audio state

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index 7ca413ddeb9f0fc7e806b4dadf0cef5eddfc1e8d..5ad3f85e9ce2bcd4d8302bc8fc6f95ce7b69cf17 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -1352,6 +1352,7 @@ bool RenderViewImpl::OnMessageReceived(const IPC::Message& message) {
                         OnReleaseDisambiguationPopupBitmap)
     IPC_MESSAGE_HANDLER(ViewMsg_ForceRedraw, OnForceRedraw)
     IPC_MESSAGE_HANDLER(ViewMsg_SelectWordAroundCaret, OnSelectWordAroundCaret)
+    IPC_MESSAGE_HANDLER(ViewMsg_AudioStateChanged, OnAudioStateChanged)
 
     // Page messages.
     IPC_MESSAGE_HANDLER(PageMsg_UpdateWindowScreenRect,
@@ -1453,6 +1454,10 @@ void RenderViewImpl::OnUpdateWindowScreenRect(gfx::Rect window_screen_rect) {
   RenderWidget::OnUpdateWindowScreenRect(window_screen_rect);
 }
 
+void RenderViewImpl::OnAudioStateChanged(bool is_audio_playing) {
+  webview()->audioStateChanged(is_audio_playing);
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 
 void RenderViewImpl::SendUpdateState() {